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Hello guys, this is a kinda last minute octraintober submission: a beurer "rangiertraktor" first off all, a little bit of backstory to the prototype: these where small shunting vehicles built by the Maschinen- und Armaturenfabrik vorm. H. Breuer & Co and where later licenced to be produced by many companys. they where used to carry around single or small groups of wagons with weights of up to 80-500 tons. the first iteration the type I had a completely open construction and a whopping 10 HP (no this is not a typo) here is a sketching of one: the type II had 28 HP. sadly i havent found a sketching or picture of this one the type III had a real cockpit for the operator to stand on and operate the machine. it looked like this and had 40HP: the type IV and V looked basically identical except that the type V had 80 HP without further ado here are the pics: there isnt much of a wip story here as the construction of the model only took me like 20 minutes. the renders took the same time as building the model the second one shows how the wagons attached to the thing. they where raised by this pin that sticks up and the weight of the wagons rested on the tractor thus giving it huge ammounts of traction to pull up to 500 tons edot: changed the position of the windows. made two renders the one where it shows how the wagons attach where made quick and dirty with pov-ray. here is the second render: hope you like this last minute submission! here is the link to the studio file for anyone to build and have fun with! https://www.dropbox.com/s/7scoqnohh0qszog/rangiertraktor v2.io?dl=0# edit: now i have an update for you guys. what is better than a small lego train model? a motorized lego train model! this uses a modified cheap "tower pro sg90" servo as its motor. the servo has been modified in such a way that it basically works like a normal brushed dc motor. i have removed the servo control board and the stops preventing the servo from rotating more than 180 degree. there are several tutorials available online on how to do this. the second modification the servo got was removing the mounting points of it at the top to make it smaller. the servo fits into the model like this: the drivetrain consists of a small white lego rubber band which drives one of the trainwheels directly (no need for gearing down as the servo has internal gearing already which is sufficient). the second pulley is one of the servos attachments just with the arms cutoff and made flush with the rest of the center hub). here is the whole thing complete with the drivers cab: i changed some of the details due to my parts library and space constraints with the taller base but overall it is the same model just different colors (it is a very old unit so a bit of rust is also present ). the drivers cab just fits loosley onto the model as the servo doesnt really fit into the lego geometry height wise and i didnt want to make the model any taller so thats how it is. it fits quite snugly though so no problem there. and finally there is a video so you guys can see it running: https://www.flickr.com/photos/145736297@N05/52187870612/in/dateposted-public/ hope you like this upgrade and as always the models files can be found in the link in my signature for anyone wishing to recreate this little model.